Tom Anderson wrote in article
[...]
http://en.wikipedia.org/wiki/Archipe...communications
How frequent are those services, and how many vehicles do they
move per
trip? A bus-like service needs to move a busload of people every
ten
minutes or whatever.

Rubbish. There are zillions of bus services that operate once an
hour,
or even less often. They're mostly outside London.

Since we were talking about a service in London, that's of no
relevance
whatsoever.

If you really want a London example.

http://www.londonbusroutes.net/times/481.htm


--
Mike D